class StaticDemo
{
	static int x;
	int y;
	public static int getX()
	{
		return x;
	}
	public static void setX(int newX)
	{
		x=newX;
	}
	public int getY()
	{
		return this.y;
	}
	public void setY(int newY)
	{
		this.y=newY;
	}
}
public class MainDemo {

	public static void main(String[] args) {
        System.out.println("静态变量"+StaticDemo.getX());
        StaticDemo a=new StaticDemo();
        StaticDemo b=new StaticDemo();
        a.setX(1);a.setY(2);b.setX(3);b.setY(4);
        System.out.println("静态变量a.x="+a.getX());
        System.out.println("实例变量a.y="+a.getY());
        System.out.println("静态变量b.x="+b.getX());
        System.out.println("实例变量b.y="+b.getY());
	}

}
